page called from form "action=post" not appearing on screen

I have a form statement with: <form name=memjoin" action=http://www.caamuseum.org/mem_test_review.php method="post"> when I click the submit button, the web address appears in the firefox address box, but no page appears on the screen. and when I try to view the page source code from the firefox "view" drop-down menu there is no source code. the page is in the correct directory and I can open the source in IE or in dreamweaver. I don't receive any error message or missing input file message. I'm at a lost as to what might be the matter. does anyone have an approach to solving this problem or know what the cause might be? thanks - Milton